System of remote control.



W. M. SCOTT.

SYSTEM 0 REMOTE CONTROL. APPLICATION FILED nuns, 1907.

Patented Aug. 25, 191 i 3 SHEETS-11331 1- 19% b1 eoou Snoeufoz W. M. SOOTT.

SYSTEM OF REMOTE CONTROL.

APPLIGATION rum) MAB-8, 1907.

1, 1 08,253. Patented Aug. 25, 1914 3 SHEETS-SHEET Z.

W. M. SCOTT. SYSTEM OF REMOTE CONTROL.

APILIOATION TILED mum, 1907.

3 8HEETS8HEET 3.

luuenfcz Wmmm I 4 4% g. 98 l arrow UNITED STATES PATENT OFFICE.

WILLIAM H. SCOTT, O1 PHILADELPHIA, PENNSYLVANIA, ASSIGNOB TO THE ELECTRICAL AND MANUFACTURING COILBANY, A CORPORATION OF NEW JERSEY.

SYSTEM OF BEKOTE CONTROL.

Specification of Letter: Intent.

Patented Aug. 25, 1914.

Application filed larch 8, 1907. Serial No. 361,282.

To all whom it may concern:

Be it known that I, WILLIAM M. Soon, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful System of Remote Control, of which the following is a specification.

My invention relates to a system of control whereby electric switches or automatic circuit breakers included in a circuit may be reset, either manually or by power, the power resetting mechanism eing effected by a control circuit or circuits extending to a more or less remote point.

It is the object of my invention to control a setting or resetting of switches 'or circuit breakers from any desired point more or less distant from the switches or circuit breakers themselves, the control being effected by apparatus controlling an electric motor which supplies the power for settin or resetting the circuit breakers or switc es.

My invention resides also in the arrangement of circuits and the apparatus controlled thereby and in the structure of both the control apparatus and the switches or circuit breakers.

My invention resides also in further features hereinafter described and pointed out. in the claims.

For an illustration of a form my in ention may take reference is to be had to the accompanying drawings, in which:

Figure 1 is a side elevation of an automatic circuit breaker with motor resetting means. Fig. 2 is a front elevation of the apparatus shown in Fig. 1. Fig. is a diagrainmatic view showing the circuit arrangements of the system. Fig. 4 is a side view of a commutator segment. Fig. is a side elevation of another commutator segment; 3

Referring to the drawings, represents a base, of any suitable insulatin material,

such as slate or marble, upon \vliic is mounted an automatic magnetic circuit breaker A. I

Upon the base 1 are mounted the main terminal blocks 2 and 3 which are adapted to be bridged by the laminated brid ing member 4 supported by but insulated roin tlic'arni 5 pivoted at 6 to the frame or housing 7 secured upon the base 1. Mounted upon and in electrical communication with the upper terminal block 2 are the stationary shunt metallic contact 8 and the stationary shunt carbon 9, the latter pivoted at 10 to its supporting bracket.

11 and 12 are the movable-metallic shunt cor-:tact and movable carbon contact engagmg respectively with the contacts 8 and 9. The shunt contacts 11 and 12 are insulated from the arm 5 and in electrical communication with each other and b means of the flexible conductor 13 with t e lower terminal block 3. Pivoted at 14, in the arm 5, is a roller 15which is engaged by thev cam surface 16 upon the cam member 17 ivoted at 18 to the bracket or housing 7. he cainmember 17 has an outwardly extending portion 19 forming an operating handle or ever. A downward pro ection 20 has pivoted therein at 21 the roller 22, adapted to be engaged by the latch 23 pivoted at 24 to the bracket 7. Pivoted concentrically with the latch 23, on the axis 24, is a latch actuating member 25 carrying at its forward end an adjustable screw 26 adapted to engage upon the top of the latch 23. An overload tripping device comprises an armature 27 which, when attracted, raises-the lever 28 to actuate the latch 23. There is, also, a tripping mechanism responsive to reversed flow comprising the magnet windings 29 and 30 pivoted armature member 31 which connects by rod 32 to the latch 23 to actuate the same. Secured to the latch actuating member 25 is a rearwardly and outwardly extending member 33 having the heel 33.

An additional opening coil 37 .is rovided for tripping the breaker which is e ected by energizing said coil 37 whereu on the core 36, having the head 38, adjusta leby screw 39 in the stirrup 40, rises and strikes the pin which in turn strikes the heel 33 of the member 33 thus actuating the latch member 25 to trip the circuit b eaker.

The circuit breaker may oe manually closed or reset by depressin the operating lever 19 which is in elevated position when the circuit breaker is opened. By depressing the lever 19 the cam surface 16 engages with the roller 15 on the arm 5 pushing the lever 5 toward the base. At first. the move ment of the arm 5 is quite rapid due to the shape of the cam surface, but after the laminated'bridging member 4 engages the main terminal bloclrs and themevenaent rnuch slighter though the operating lever 19 moves through relativelyrgreat space,

thus serving to cramp the member i; into contact with the main terminals 2 and 9,, When the parts reach lull circuit closing position the latch 23 catches the roller 22 carried by the cam member 17, thus lcclring the parts in circuit closin position.

Upon the occurrence an abnormal circuit condition, such as an overload or reversed energy flow, the latch 23 is actuated thus releasing the cam member 17 and allowing the parts to spring to open circuit position. In opening circuit the laminated I bridging member a first separates from the main terminals 2 and 3, later the metallic shunt contact 11 separates from the station- 'ary metallic shunt contact8, and finally, the

shunt carbon 12 separates from the shunt, carbon 9 and the final arcing takes place be-' other the rotatable element ll ol a brake.

The worm l3 engages with the worm wheel 4L5 secured upon a shaft 46 revolving in the bearings 4:7, 4:8. Un one end of the shaft 46 is carried a crank 4:9. The outer end oi the crank 49 is adapted to engage the end of crank 51 secured upon the shaft 52 supported in bearing 53, having secured upon its other end the crank 54 carryin at its outer end a pin upon which is rotata ly secured the rod 55. The rod 55 is connected to the crank 54:

for positive driving in either direction, while the crank 49 is not connected to the crank 51, except by spring 50, and is adapted to drive crank 51 only in one direction.

Supported upon the motor M by brackets 61 and 62 is the housing 63 of an electrornagnet whose winding 6d is located within the same and surrounds the core 65. 66 is the armature mounted upon the rod 67 which extends through the core and out through the housing and engages the lever 68 pivoted to the frame at 69. Two springs 70 are secured to a cross bar 71 at the top oil the lever 68 and their other ends are secured to cars 7 2 on the housing 63. Cooperating with the rotatable brake clement 4- which is in the form of a hollow truncated cone, is the brake shoe 73 of complementary form pivoted 7.4- to the lever 66., in the operating lever 19 of the circuit breaker is a transversely extending pin 19. The pin 19 engages in the slot 75, in the member 76 secured upon the upper end of the rod 55, and adjustable thereon by the screw 7? and nuts l6,

nienaher t6 to the rod 55 m untain efiect to a means for adjusting the ei lective length at the rod 55between the l l l fir -end of the slot and the crankpin the crank 54-. 4 y V Supportedupon the same base with the worm wheel and cranks is the vertically disposed plate cit insulating material ti secured, to the vertical standard or bracket 8%. Supported bg the plate 93, which may be of slate, is the s unit 65 coaxial with the shaft of the worm wheel andcranks; Rotatable upon the shaft 65 are two contact rings or segments 86 and 87,showninlarger scale in Figs. 1 and 5, separated-from each other by the member 88 of insulating material and both in electrical communication with the shaft 85. A circular disk-89, 'of insulating material, forms theouter. member of this rotatable commutator, all the elements of which are mechanically secured together to rotate upon the shaft 85. The commutator is rotated by a crank 54 through the agency of the cranklike member 90, securedto the insulating disk 89. The contact rings 86 and 87 are not ,circurnferentially continuous. The conductingdish-86 is continuous only through a little" more than half a circumference, while the disk or segment 87 extends through a little'less than half a circumference. A brush 'holderllldismsecured to the plate 83 and supports the two brushes 92 and 93, bearing upon 86 and 67 respectively.

Referring tol ig. 3, 94 and 95 represent respcctively'the positive andnegative bus bars'with whichthe generator G is adapted to communicate {through the circuit breaker A and thec'onductor 9.6. M is the armature oi the; series motor M, the series field being represented The series field and the winding 64 of the brake magnet sire connected in parallel with each other and in series with the armature. v

A switch lever 97, located at any point more or lessremote from the circuit breaker A, is pivoted at 98 and connects by the conductor 99 with the two commutator segments 86 and 87, as through the commutator shaft The switch let er 97 has a normal tendency to reniainin central position as shown in Fig. 8, due to the opposing springs 100. and 101, and 1n this position engages the middle of the three contacts 102, 103, and 104. The contact 102 is in communication with a positive conductor 102 of the system through the winding 105 of the low voltage or underload magnet whose core 106 is adapted to hold the lever 97 in engagement with contact 102 when the armature 10? is held attracted by the core 106.

switch lever 97 is to be held in L Similarly, the contact 10% connects through the windcontact with contact 104 when the armature 110 is held attracted by the core 109. L is an ordinary incandescent lamp having its terminalsconnected to the contacts 102 and 103 respectively and serves merely as a visual indicator that the circuits at the operating mechanism for the breaker A are in readiness to operate as soon as the lever 97 is placed on contact 102.

The armatur 66 of the brake magnet is adapted to carry the contact 111 which, when the armature 66 is in the attracted po sition, bridges the contacts 112 and 113.

The operation is as follows:\Vith the parts in the position as shown in Fig. 1, the motor has just completed the closing movement of the circuit breaker and the breaker.

is locked in circuit closing position. The

crank 54 has'been moved by the motor just Should the circuit breaker now be tripped by any of the past the dead-center position.

means provided, as the overload tripping mechanism, reversed energy flow tripping mechanism, opening coil 37, or by hand, the operators handle 19 will be rotated in a counter-clockwise direction, as seen in Fig. 1, about its pivot 18, and will raise the rod 55 until, when the operators lever 19 is in uppermost position, the crank 54 will be just short of dead-center position after having rotated in the direction of the arrow to analmost vertical position. The spring 50,

connected at one end' to the hub of the crank li hted or glowin switch 97 knows 51 open and that the parts are in position ready to operate to close the breaker.

over on to contact 102 and accordingly cur: rent will flow from positive conductor 102 through the underload coil 105, contact 106, switch 97, conductor 99 to the common connection for segments 86 and 87, through 86,

brush 92, series field S, and the brake coil 64 in parallel with it, motor armature M", and conductor 96 to the negative bus 95. In consequence, the brake coil winding 64 is energized and the armature 66 is attracted thereby pushing upon rod 67 to force the lever- 68 to the right, as seen in Fig. 1, against the opposition of the springs 70, thus lifting' the brake shoe 73 from the brake member 44. The motor accordingly starts and drives the -wheel 45 by the worm 43 which causes the crank 49 to move around The operator accordingly moves the-switch lever 97 to the previously elevated crank 54, to en gage the same and to drive the same around in a clockwise direction, as viewed in Fig. 1, to resume the position of parts shown in Fig. 1. Just before this position is reached, the brush 92 snaps off of the point 86' of the segment 86 on to insulating material and the motor circuit is accordingly broken, and the brake coil 64 denergized, allowing the springs to set the brake and bring the parts to a stop.

\Vhen the brake magnet is energized, the contact 111 bridges contacts 112, and 113, thus closing circuit through the motor independent of the distant switch 97, so that when the switch 97 has instituted the movement, themovement will continue until the parts assume the position as shown in Fig. 1.

he closing of the circuit through contacts '112 and 113 greatly diminishes the current through the switch 97 so that the underload magnet 105 releases the switch lever and it assumes middle position under a the control of the springs 100' and 101; If,

for any other reason the current in the circult should be greatly reduced the underload magnet will release switch 97 to allow it to assume this middle position.

hen the motor circuit has been interrupted by the brush 92 leaving-segment 86, brush 93 has come into communication with segment 87, so that, if it is desired to trip breaker A from a distance, the switch 97 is moved into engagement with contact 104,- whereby there is a circuit from the positive .bus94 through the breaker A, opening coil,

37, brush 93, segment 87, conductor 99, switch 97, the contact 104, and negative conductor 104. This causes the rise of the core 36 of the opening coil causing the tripping of the breaker 'in a well known manner. And, as aforestated, the tripping of the breaker moves the rod 55 and crank 54 and the commutator to such position that again moving the switch 97 to the'contact 102 will start the motor to close the breaker.

-What I claim is 1. In combination, a circuit breaker, tripping means therefor, a motor for resetting .said breaker, a rod having pin and slot for said motor, and an electro-magnet for lifting said brake when the motor is started, the winding of said electro-ma-gnet being connected in shunt with the field winding of said motor, said electro-magnet being dencrgized for setting the brake when said motor is deenergized.

4c. In combination, a circuit breaker, a motor tor' operating the same, a coil tor tripping said circuit breaker independently of said motor, a crank and rod connection to the operating member of said circuit breaker, a second crank driven by said motor to drive said crank and rod connection, a switch for controlling said motor, the movable member of said switch movable in fixed relation with respect to said first men-' tioned crank, and a switch having contacts in the circuits of said tripping coil and said motor control switch.

5. In combination, a circuit breaker, automatic means for tri ping the same, a motor for resetting the reaker, a crankand rod connection with the operating member of said breaker, a lost motion'connection between said crank and operating member of the breaker, and a lost motion connection between said motor and said crank.

6. In combination, a circuit breaker, a tripping coil therefor, a rod'having a lost motion connection with the operating member of said breaker, a crank connected to said rod, a motor, a secondcrank driven by said motor, said second crank adapmd to drive said first mentioned crank and having lost motion with respect thereto, a switch controlling said motor, the movable mem ber of said switch movable in fixed relation with said first mentioned crank, and an operators switch controlling the circuits at said switch and said trippingcoil.

7. lln combination, a circuit breaker. ,a' tripping coil therefor, a having motion connection with the movable men ber of said circuit breaker, aisecond crank, adapted to drive said first mentioned crank and having lost motion with res ect thereto, a motor for driving said secon crank, said motor actuating said circuit breaker in one direction only after it has been tripped by said tripping coil, and a switch controlling said motor, the 'movable member oi said switch actuated i li ed relation with said first mentioned'grgi switch to break the euit vof said motor when said circuit breaker is reset, said switch being closed when said circuit:

breaker opens.

8. In combination, a circuit breaker, a coil for tripping the same, a member having lostmotion with the operating member of said circuit breaker, a second member adapted to operate said first mentioned member and having lost motion with vrespect thereto, a motor for actuating said second member,

k for opening said menace and switches controlling the circuits of said motor and said trippingeoil, the movable members 0,1? said switches being operated in fixed relation with respect to said first mentioned member tor opening the circuit of said motor when said circuit breaker is reset and for closing the circuit of said tripping coil when said circuit breaker is reset.

9. in combination, a circuit breaker, a motor tor resetting the same, a motor brake, a magnet for lifting the brake when the motor is energized, the winding of said magnet being connected in parallel with a winding of said motor, a switch controlling thecircuit ot said motor and brake magnet, and means for shifting said switch by the tripping of said breaker.

10. In combination, a circuit breaker, a

said brake, the winding of said electromagnot being connected in shunt with a winding of said motor, a switch controlling sald motor movable with the movable member of said breaker to break the circuit of said magnet when said breaker is reset an opera tors switch, and a'switch control ed by said electro-magnet winding tor holdin the motor circuit closedindependently c said operators switch.

11. in combination, a circuit breaker, a motortor operating the same, arod having a lost mot'on connectionwith the operatin niembero said breaker, a crank connect to said rod, a second crank driven bysaid motor, said crankshaving lost motion with respect to each other, and a spring connecting said cranks.

12., The" combination with a, circuit ,breake mota motor moving always in the same ,lilirection for resetting'the some, a trippin coil tor said'circuit breaker, switches con rolling thecircuits of .sni motor and said 1 operators, switch, bein alternately Lin series with said motor and coil, themovable' of said motoran c n e ed.

id, In .cbmbination, a circuit breakeh e motor. tor resetting the some, brake for said'motor, a winding for o 'retiii'g'jsaid brake, means tor'startmg sai "motor from a ;di's tance,;' and means actuated by said brake ,wi'nding for maintainingthe motor circuit closed after being closedat a distor .l l iln eombinatipma circuit weaken-a latch rtmararupgm coil for said latch, a, mot:or tor operatm said breaker inbn'e direction enlytolate ing position, a worm wheel driven by. said motor, a crank connected said worm wheel, in second crank driven always; the some direction motor for operating the same, a brake for said motor, an electro-magnet for operating 0 said trippin tripping coil switches; being mechanically by said first mentloned crank and having lost motion'wi'th respect thereto, a rod connected to said sccond crank and having lost motion connection with the movable mem ber of said circuit breaker, and a motor controlling switch having its movable mem ber movablc in fixed relation with said second crank.

15. In combination, a circuit breaker, a motor for operating the same, a crank driven by said motor, a second crank driven by said first mentioned crank and having lost motion with respect thereto, a rod driven by said second crank and having lost motion connection with the movable member of'said circuit breaker, said second crank and rod being just over dead-center when said motor has reset said breaker.

16. The combination with the movable member of a circuit breaker, of a motor, means for driving said movable member in one direction only intervening between said motor and said movable member and having lost motion with respect to said motor and with respect to said movable member, a tripping coil for said circuit breaker, a switch for controlling said motor, the movable member of said switch movable in fixed relation with said driving means, and a switch having contacts in the circuits of said tripping coil and said motor control switch.

17. In combination, a circuit breaker, a motor for operating thesame, a crank driven always in the same direction by said motor, a second crank driven by said first mentioned crank and having lost motion with respect thereto, a lost motion connection between said second crank and the operating member of said circuit breaker, and a motor controlling switch movable with said second crank.

18. The combination with an electric switch, of a motor for closing the same, a brake for said motor, an electro-magnet controlling said brake, an operators switch for sinmltaneously closing the circuit of said motor and said electro-magnet, a switch closed ly said electro-maghet for maintaining thebnotor circuit closed after the motor has been started through said operators switch, and means for automatically opening the circuit .of said motor atthe end of the switch closing movement.

' 19. The combination with an electric switch, of a motor for operating the same, a latch for said switch, a tripping coil for said latch, a motor driven crank, a second crank driven by and having lost motion with respect to said first crank, a rod connected with said. secondv crank, and'a' pin and slot connection between said rod and the movable member of said switch, said switch when tripped opening inde ndently of said motor, and said motor moving said switch in one direction only to latchin position.

20. The combination wit an electric switch, of a coil for tripping the same, a

said first crank, a frame supporting the shafts of said cranks in substantial axial 'alinement, and switches controlling the circuits of said motor and said tripping coil, the rotating members of said switches being mounted coaxially with said crank shafts.

21. In combination, a movable contact member, a rod and crank connection with said contact member, a motor, a second crank driven thereby, a, lost motion connection between said cranks, means engaging said cranks preventing said rod and crank connection assuming a dead-center position, and a'motor controlling contact movable in definite relation with said rod and crank connection.

22. In combination, a movable contact member, a rod and crank connection with said contact member, a motor, a'second crank driven thereby, a lost motion connection between said cranks, means engaging said cranks preventing said rod and crank connection assuming a dead-center position, a motor controlling contact movable in definite relation with said rod and crank connection, and a remote switch controlling said motor.

23. In combination, a movable contact member, a rod and crank connection with said contact member, a motor, a second crank driven thereby, a lost motion connection between said cranks, and means on said second crank for preventing said rod and crank connection assuming a dead-center position.

24. In combination, an electric switch, an operating member therefor, a crank having a lost motion connection with said operating member, a motor, a second crank driven by said motor, a lost motion connection between said cranks, and means engaging said cranks for preventing said first mentioned crank assuming a dead-center position.

25. The combination with an electric switch, of,a latch for restraining the same in normal position, a motorrotating always in one direction for closing said switch, means for tripping said switch, the opening of said switch being independent of either actuation or control by said motor, and a switch having contacts controlling said motor and said tripping means respectively.

26. The combination with an electric switch, of a motor rotating always in one direction for closing the same, a crank and rod connection between said motor and said switch, the opening of said switch being independent of either actuation or control by said motor, a tripping coil. for said electric switch, a switch controlling said tripping coil, a switch controlling said motor,

fill

snid tripping coil and motor switches having their movable members movable in fixed relation with said rod and crank connection.

27-. The combination with an electric switch, of a, motor for closing the same, a coil for tripping said electric switch independently of said motor, means for closing the circuit of said motor to start the same, automatic means tor maintaining the motor circuit closed until said switch has been closed loy said motor, and a switch for breakin the motor circuit when said switch is close l 28. lhe combination with an electric switch, of a coil for tripping the same, a motor rotating always in one direction tor restoring said switch only, a motor, control switch lorealring the circuit 0t said motor when said electric switch has been restored, and a lostmotion connection between said electric switch and said motor control switch for resetting seid motor control switch in response to the opening movement ct said electric switch.

29. The comhinntion with an electric switch, of a motor rotating always in the same direction tor closing the same, on o erators switch tor closing the circuit o'l t e motor to start the same, automatic means for maintaining the motor circuit closed indepcndentl of said operators switch, and a switch tor realring the motor circuit when snid switch reaches closed position.

till. The comhination with an electric switch, oi or motor rotutin elways in the same direction tor clog It came, an operators switch tor etc the circuit oil said motor to start the same, and a motor circuit switch for rupturing the circuit of said motor at the end ot the switch closing movement, snid motor circuit switch losing closed independently oil said motor hy the opening movement of said switch, a coil tor trippi said electric switch controlled by said operntors switch.

311. The combination with an electric switch, of a latch, a tripping coil theor, n motor tor closing said switch, the owning off said switch heing inde endent oi either actuation or control or sai motor, a distant switch manuell operated independently cl said electric switch ilor closing the circuit ot said tripping coil or ct said motor to the some, and an nut/emetic switch in mid mot/or circuit tor rupturing said motor circuit the end oil the switch closing movement and 'l'or automatically acid motor circuit upon the opening oi snid switch, said motor circuit switch h closed opening movement switch.

The eomhination on switch, a motor tor the some, on opcretor s switch for closing the circuit o said motor ior g name, out emetic means tor maintaining said motor circuit closed independently of said operators switch, and an automatic switch in said motor circuit for rupturing 'said motor circuit at the end of the switch closing movement and for automatically restoring said motor circuit after said switch has opened, said motor circuit switch being closed by theopenin movement of said switch.

33; he combination. with an electric switch, of a motor for actuating the same, a cranlc and rod connection between said motor and said switch, an automatic switch in the circuit of said motor and actuated by said motor to rupture the circuit of said motor, and actuated by the opening movement ot said switch by said crank and rod connection independently of said motor to restore said motor circuit, a coil tor tripping said electric switch, and an operators switch having difi'erent contacts controlling said motor and said tripping coil.

34. The combination with a main switch, ct means-for locking the same in normal position, means for tripping said switch, of a motor rotating always in the same direction tor moving said main switch to normal position, a motor control switch automatically rupturing the circuit of said motor alter predetermined movement of said main switch by said motor and actuated by said main switch independently or said motor when said main switch is tripped, a second switch controlling said motor through said motor control switch, and a switch automatically maintaining the circuit of said motor closed after it has once been closed by said second switch.

'l he combination with a main switch, of a motor tor actuating the some, a brake tor said motor, on electromagnet for lifting said loral e, a switch controlling the circuitv of said magnet and saidmotor for lilting said lorelre and starting said motor. and a switch controlled loy said electro-maguet for maintaining the circuit of said motor closed alter it has once been closed by said switch.

3d. "the combination with a main switch, of a latch for restraining the same in normal position, a tripping coil, a motor rotatinn nlways in one direction for closing said main switch, the openin of said main switch heing independent 0t either actuation or control by said motor, a douhlcthrow operutor s switch, end connections whereby sold operntors switch in one position enersnid trip ing coil to trip said main switch und in its other position-closes circuit through said motor independently of sold trip coil to energies said motor to return third nmin to normal position.

fill. Theromhinntion with mnin switch, oil a is oh tor rnining the some in normal no 'tien, n tripping coil, n motor rotating ziln-cys one irection "tor closing said main switch, the opening of said main switch being independent of either actuation or control by said motor, a double throw operators switch, connections whereby said operators switch in one position, energizes said tripping coil to trip said main switch and in its other position closes circuit through said motor independently of said trip coil to energize said motor to return said main switch to normal position, and a switch for breaking the circuit of said motor when said main switch has reached normal position.

38. The combination with a main switch, of means for restraining the same in normal position, a-trip coil therefor, a motor for moving said main switch to normal position, a double throw operators switch which in one position energizes said trip coil to trip said main switch and in its other position energizes said motor for returning said main switch to normal position, and a second switch actuated by said motor for breaking the circuit of said motor whensaid main switch reaches normal-position and actuated independently of said motor by said main switch when tripped to reestablish said motor circuit.

39. The combination with a main switch, of means for restraining the same in normal position, a trip coil therefor, a motor for moving said main switch to normal position, a double throw operators switch which in one position energizes said trip coil to trip said main switch and in its other position energizes said motor for returning said main switch to normal position, a second switch actuated by said motor for breaking the circuit of said motor when said main switch reaches normal position and actuated independently of said motor by said main switch when tripped to reestablish said motor circuit, and a third switch movable with said second switch controlling said trip coil.

40. Thecombination with a main switch, of means for restraining the same in normal position, a trip coil therefor, a motor for moving said main switch to normal position, a double throw operators switch which in one position energizes said trip coil to trip said main switch and in its other position energizes said motor for returning said main switch to normal position, a second switch actuated by said motor for breaking the circuit of said motor when said main switch reaches normal position and actuated independently of said motor by said main switch when tripped to reestablish said motor circuit, and an automatic switch maintaining the circuit of said motor closed after it'has once been closed by said opera tors switch.

41. The combination with an electric switch, of a motor for closing the same, an

operators switch for closing the circuit of said motor for starting the same, automatic means for maintaining said motor circuit closed independently of said operators switch, and an automatic switch in said motor circuit for rupturing said motor circuit at the end of the switch closing movement and for automatically restoring said motor circuit after said switch has opened, said motor circuit switch being closed by the opening movement of said switch.

42. The combination with a main switch, of a motor for actuating the same, an operators switch for closing thecircuit of said motor for starting the same, an electro-mag net for holding said operators switch in starting position, and automatic means operative after said motor circuit has been closed by said operators switch for maintaining said motor circuit closed independently of said operators switch and for causing said electro-magnet to release said operators switch.

43. The combination with an electric switch, of a circuit controlled thereby, of a lnotor for actuating said switch, means independent of the electrical conditions in said circuit for closing the circuit of said motor for starting the same, means for holding said means in motor starting position. and automatic means for maintaining said motor circuit closed independently of said first named means and for releasing the same from saidholding means.

The combination with a main switch, of a trip coil therefor, a motor for actuating said main switch, an operators switch in one position closing the circuit of said motor for starting the same and in another position closing the circuit of said trip coil. and an electro-n'iagnetic switch operative after said motor circuit has been closed by said operators switch for maintaining said motor circuit closed independently of said operators switch.

45. The combination with a main switch, of a trip coil therefor. a motor for actuating said main switch. an operators switch in one position closing the circuit of said motor for starting the same and in another position closing the circuit of said trip coil, and an electro'magnetic switch operative after said motor-circuit has been closed by said opcr ators switch for maintaining said motor circuit closed independently of said operator's switch. said operators switch controlling said clectro-magnetic switch.

46. The combination with an electric switch, of a motor for actuating the same. a switch for starting said motor, means for holding the same in startingposition. an clcctro-magnet controlled by said switch. and a switch controlled by said clectro-mag net for maintaining said motor circuit closed independently of said motor starting switch and for releasing the same from said holding means.

47. The combination with an electric switch, of means restraining the same in normal position, tripping" means therefor, a motor fornmoving said switch to normal position, a switch for starting said motor, an electro-magnetcontrolled lo said switch, and a switch controlled by sai electromagnet and controlling the circuit of said electrdmagnet for maintaining said motor circuit closed independently of said motor starting switch.

48. The combination with a main switch, of means for tripping the same, a motor ro-v tating always in the same direction for returning-said main switch to norma'lposition after having been trip ed, an operators switch for starting S311? motor, automatic mcans ior maintaining said motor circuit closed independently of said operators switch, and a motor control switch for holding said motor circuit open after predetermined movement of said main switchand for closing said motorcircuit after saidmain switch has been tripped.

49. The combination with a main switch, of a motor for actuating the same, an operatorsswitch for closing the circuit of said motor, an electro-magnet whose winding broughtnintio circuit by. said operators switch for holding saidoperators. switch in circuit closing position, and automatic means operative after said motor circuit has been closed (by .said operators switch for. mainta-ining'said motor circuit closed independently of said operators switch and for causing saidelectro rnagnct to release said operators switch.

50. The combination with a main switch, of a motor for actuating the same, an oper ators switch for closing the circuit of said motor, on electro-magnetfort-holding said opcr'ators switch in circuitclosing position, a second electro-magnet controlled by said operators switch, and aswitch controlled by said second electro-magnct for maintaining said motor circuit closed independently at said operators switch.

51. :The combination with a main switch, of a motor tor nctuatingwlie same,an-op e'rat-ori's switch for closing the circuit of said motor, an eleetro-magnet tor holding said operators switch in circuit closing position, a second electro-magnet controlled by said operators switch, and a switch controlled by said second electro-magnet for maintaining said motor circuit closed in dependently of said operators switchhnd 1 for: causing; e said first named electro mag'net to. release said operators switch.-

52. The combination with a main switch, of means for tripping the same, a motor for returning said mainswitch tonormal pm sition after having been tripped, a switch for starting said motor, an automatic switch for maintainingsaid motor circuit closed independently of said starting switch, and a motor control switch actuated in one direction by said motor for breaking the motor circuit after predetermined movement of said 'main switch and actuated in opposite direction by the opening movement of said main switch independently of said motor for reestablishing said motor circuit.

53. The combination with a main switch, of a trip coil therefor, a motor for actuating said main switch, a double throw automatic switch in one position controlling said trip coil and in another position controlling said motor, an operators switch controllingsaid motor through said double throw automatic switchjn one of its positions, and means for maintaining the circuit of said motor closed after having once been closed by said operators switch.

=54. The combination with a main-switch, of a trip coil therefor, a motor for actuating said main switch, a double throw automatic switch in one position controlling said trip coil and in another position controlling said motor, and a double throw control switch in series with said automatic double throw switch.

55. Tho'combination with a main switch, of a trip coil therefor, a motor for actuating said main switch, a'double throw automatic switch in one position controlling said trip coil and in another position controlling said motor, a double throw control switch, and a single conductor extending between said double throw switches and connecting them int-Series with each other 7 56. The-combination with a main switch, of a trip coil therefor, a motor for actuating saidmain switch, a'double throw automatic switch in one position controlling said trip coil and in another position controlling said motonadouble throw control switch in series with said automatic double throw switch, and an automatic switch controlled by said double throw control switch for maintaining the cireuit of said motor closed independently of said double throw control switch.

at. The combination with a main switch, of a trip coil therefor, a motor for actuating said mainswitch, a double throw automatic switch in one-position controlling said trip coil and in another position controlling said motor, a double throw control switch, a single conductor extending between said double throw switches and connecting them in series with each'other, and an automatic switch controlled -by'sa, id double throw control switch for maintaining" the circuit of said motor closed independently of said double'throw control switch.

58. The combination with a main switch, or a trip coil therefor, a motorfor actuating said main switch, a double throw automatic Inwitness whereof, I hereunto set my hand in the presence of the two subscribing 10 witnesses.

WILLIAM M. SCOTT.

Witnesses:

ANNA E. S'rmNnooK, ALICE S. MARSH. 

